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4x+2x=40-12
6x=28/:6
x=4⁴/₆
4x+2x=40-12
6x=28|: 6
x= 28/6 (ułamek)
x=4 i 4/6
b. proszę o najjj :)))
6x = - 28 / /6
x = - 4,6